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High-contrast imaging (HCI) is one of the most challenging techniques for exoplanet detection. It relies on sophisticated data processing to reach high contrasts at small angular separations. Most data processing techniques of this type are…

天体物理仪器与方法 · 物理学 2021-02-10 Carl-Henrik Dahlqvist , Olivier Absil

Photon-number squeezing and correlations enable measurement of absorption with an accuracy exceeding that of the shot-noise limit. However, sub-shot noise imaging and sensing based on these methods require high detection efficiency, which…

量子物理 · 物理学 2019-03-06 E. Knyazev , F. Ya. Khalili , M. V. Chekhova

A novel interferometric method - SLIVER (Super Localization by Image inVERsion interferometry) - is proposed for estimating the separation of two incoherent point sources with a mean squared error that does not deteriorate as the sources…

光学 · 物理学 2016-02-16 Ranjith Nair , Mankei Tsang

We experimentally demonstrate a universal, parameter-independent test for asymmetric source discrimination. The test allows us to discriminate faint sources well beyond the diffraction limit by exploiting spatial mode demultiplexing (SPADE)…

量子物理 · 物理学 2026-05-18 Luigi Santamaria Amato , Danilo Triggiani , Cosmo Lupo

The Improved Cross-Entropy (ICE) method is a powerful tool for estimating failure probabilities in reliability analysis. Its core idea is to approximate the optimal importance-sampling density by minimizing the forward Kullback-Leibler…

数值分析 · 数学 2025-09-10 Zhiwei Gao , George Karniadakis

One of the main steps towards large-scale quantum photonics consists of the integration of single photon sources (SPS) with photonic integrated circuits (PICs). For that purpose, the PICs should offer an efficient light coupling and a high…

应用物理 · 物理学 2021-03-03 J. Guimbao , L. M. Weituschat , J. M. Llorens , P. A. Postigo

Recent investigations have demonstrated the potential for utilizing a new observational and data analysis technique for studying the atmospheres of non-transiting exoplanets with combined light that relies on acquiring simultaneous,…

地球与行星天体物理 · 物理学 2022-10-12 Avi M. Mandell , Jacob Lustig-Yaeger , Kevin Stevenson , Johannes Staguhn

The Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES) instrument is a lenslet-based integral field spectrograph that will operate at 2 to 5 microns, imaging and characterizing colder (and thus older) planets than…

We characterize the eccentricity distribution of a sample of ~50 short-period planet candidates using transit and occultation measurements from NASA's Kepler Mission. First, we evaluate the sensitivity of our hierarchical Bayesian modeling…

地球与行星天体物理 · 物理学 2016-04-06 Megan Shabram , Brice-Olivier Demory , Jessi Cisewski , Eric B. Ford , Leslie Rogers

In the framework of TRACE coronal observations, we compare the analysis and diagnostics of a loop after subtracting the background with two different and independent methods. The dataset includes sequences of images in the 171 A, 195 A…

太阳与恒星天体物理 · 物理学 2015-05-18 S. Terzo , F. Reale

We present an accurate and fast 3D simulation scheme for out-of-plane grating couplers, based on two dimensional rigorous (finite difference time domain) grating simulations, the effective index method (EIM), and the Rayleigh-Sommerfeld…

光学 · 物理学 2015-04-14 W. J. Westerveld , H. P. Urbach , M. Yousefi

The similarity among samples and the discrepancy between clusters are two crucial aspects of image clustering. However, current deep clustering methods suffer from the inaccurate estimation of either feature similarity or semantic…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Chuang Niu , Hongming Shan , Ge Wang

Image Copy Detection (ICD) aims to identify manipulated content between image pairs through robust feature representation learning. While self-supervised learning (SSL) has advanced ICD systems, existing view-level contrastive methods…

计算机视觉与模式识别 · 计算机科学 2026-02-26 Yichen Lu , Siwei Nie , Minlong Lu , Xudong Yang , Xiaobo Zhang , Peng Zhang

We analyze the fundamental resolution of incoherent optical point sources from the perspective of a quantum detection problem: deciding whether the optical field on the image plane is generated by one source or two weaker sources with…

量子物理 · 物理学 2019-11-07 Xiao-Ming Lu , Ranjith Nair , Mankei Tsang

During the scheduled high luminosity upgrade of LHC, the world's largest particle physics accelerator at CERN, the position sensitive silicon detectors installed in the vertex and tracking part of the CMS experiment will face more intense…

仪器与探测器 · 物理学 2015-01-21 T. Peltola

Spectral retrieval techniques are currently our best tool to interpret the observed exoplanet atmospheric data. Said techniques retrieve the optimal atmospheric components and parameters by identifying the best fit to an observed…

地球与行星天体物理 · 物理学 2020-10-21 Kai Hou Yip , Ingo P. Waldmann , Angelos Tsiaras , Giovanna Tinetti

Robust model-fitting to spectroscopic transitions is a requirement across many fields of science. The corrected Akaike and Bayesian information criteria (AICc and BIC) are most frequently used to select the optimal number of fitting…

天体物理仪器与方法 · 物理学 2020-11-25 John K. Webb , Chung-Chi Lee , Robert F. Carswell , Dinko Milaković

We report an experimental demonstration of a nonclassical imaging mechanism with super-resolving power beyond the Rayleigh limit. When the classical image is completely blurred out due to the use of a small imaging lens, by taking advantage…

光学 · 物理学 2016-11-03 Jane Sprigg , Tao Peng , Yanhua Shih

Accurately measuring the translations of objects between images is essential in many fields, including biology, medicine, chemistry, and physics. One important application is tracking one or more particles by measuring their apparent…

Line-intensity mapping (LIM) is an emerging technique to probe the large-scale structure of the Universe. By targeting the integrated intensity of specific spectral lines, it captures the emission from all sources and is sensitive to the…

宇宙学与河外天体物理 · 物理学 2023-09-15 Gabriela Sato-Polito , Nickolas Kokron , José Luis Bernal